Mohammad Mokhtari, Ali Mrshekari (two goals), Mohammad Ahmadzadeh, and Mehdi Shirmohammadi were on target for Team Melli.
Iran will play the US and Japan in Group B in the following days.
Hosts UAE, Brazil, Spain, and Saudi Arabia are in Group A.
In its eleventh edition, the Intercontinental Beach Soccer Cup is the most prestigious annual competition in the sand version of the game. The FIFA Beach Soccer World Cup takes place every two years.
After a round-robin group stage, the top two teams from each group will meet in the semifinals and subsequent finals. The third and fourth place teams will compete for places 5th-8th. All matches take place on the main stadium at Kite Beach in Dubai.
Iran has won the title three times. 219
